9 Mar
2005
9 Mar
'05
9:04 a.m.
Bill Allen<lau(a)ballen.fastmail.fm> wrote:
I'm having really bad xrun problems in jack with
my MAudio 24/96 card. I
can't find any setting that doesn't result in 10's of xruns every few
minutes which is obviously unacceptable. The latency doc in the linux
audio users page at
http://www.djcj.org/LAU/guide/Low_latency-Mini-HOWTO.php3 points out that
most soundcards want to have an IRQ of 9, 10 or 11. When I cat
/proc/interrupts (below), it appears that my card is at IRQ 19 which as I
understand it puts it behind just about everything. Could that
be the root of my xrun problem? If so, how can I make the card be on
another interrupt.
Regards,
Bill
cat /proc/interrupts
CPU0
0: 738208 IO-APIC-edge timer
1: 379 IO-APIC-edge i8042
2: 0 XT-PIC cascade
8: 0 IO-APIC-edge rtc
9: 0 IO-APIC-level acpi
12: 24226 IO-APIC-edge i8042
14: 71993 IO-APIC-edge ide2
15: 20598 IO-APIC-edge ide3
16: 43548 IO-APIC-level ohci1394, nvidia
17: 2157 IO-APIC-level SysKonnect SK-98xx
18: 0 IO-APIC-level libata
19: 177 IO-APIC-level ICE1712
21: 0 IO-APIC-level uhci_hcd, uhci_hcd, uhci_hcd, uhci_hcd,
ehci_hcd
That wouldn't cause xruns, AFAIK.
What else do you have running on this machine. in terms of btoh software
and hardware?
What kernel are you using? Does it support low latency/realtime (either
a patched 2.4 kernel or a newer 2.6 kernel)?
How are you starting jack?
-- Brett